A key to the Mexican genera of Tanymecini (Coleoptera: Curculionidae)

Abstract

We provide a key to the eight genera of the tribe Tanymecini distributed in Mexico. Habitus photographs of all genera are included as are photographs of various other key characters. A brief synopsis of each genus is included as well as a list of the species recorded for Mexico. The species Minyomerus languidus Horn and Pandeleteius championi Howden are newly recorded for Mexico.

Systematic revision of the genusIsodacrysSharp, 1911 (Coleoptera: Curculionidae: Entiminae: Tanymecini)

“…Some clades within Isodacrys may have the protibial inner margin smooth, without teeth. Terminology of the metatibial apex (true corbel, false corbel and simple metatibial apex) follow Oberprieler (2010) and Marvaldi et al (2014) , incorporating the observations made by Thompson (1992) and therefore it is presented as in Cortes-Hernández & Morrone (2019 , see figures 1–6). In Isodacrys species the metatibial apex is simple.…”

“…See character 58 in Franz (2012) and character 51 in Marvaldi et al (2018) . Character state 1 synapomorphy for Scalaventer (see figures 3 and 4 in Cortes-Hernández & Morrone, 2019 ; l: 1, ci: 1, ri: 1).…”

“…Holotype: ♂, examined; labeled as [151|35/Choix, SIN./13-VIII-35] [HOLOTYPE/ Isodacrys / apicale /A.T.Howden/No.7385] [CNC/379712]. O’Brien & Wibmer, 1982 : 46 (checklist); Morrone, 1999 : 145 (checklist); Cortes-Hernández & Morrone, 2019 : 50.…”

“…Syntypes not examined. Blackwelder, 1947 : 799 (checklist); Howden, 1961 : 85–86 (redescription); O’Brien & Wibmer, 1982 : 46 (checklist); Morrone, 1999 : 145 (checklist); Cortes-Hernández & Morrone, 2019 : 50.…”

“…Isodacrys ovipennis ; Pierce, 1913 : 401 (new combination); Burke, 1959 : 39 (actually Isodacrys burkei ); Howden, 1961 : 87–88 (redescription and lectotype designation); O’Brien & Wibmer, 1982 : 46 (checklist); Howden, 1993a : 2 (checklist); Morrone, 1999 : 145 (checklist); Anderson, 2002 : 780; Cortes-Hernández & Morrone, 2019 : 50.…”